"It was this bold act of Qurratu'l-'Ayn which shook the foundations of a literal belief in Islamic doctrines among the Persians. It may be added that the first-fruits of qurratu'l-'Ayn's teaching was no less than the heroic Quddus, and that the eloquent teacher herself owed her insight probably to Baha'u'llah. Of course, the supposition that her greatest friend might censure her is merely a delightful piece of irony." (Dr. T. K. Cheyne's "The Reconciliation of Races and Religions," pp. 103-4.)